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Finding the Fourth Proportional to 511,860.90, 767,791.20 and 274,877.58

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Solution

The fourth proportional to 511,860.90, 767,791.20 and 274,877.58 is: 412,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,860.90 : 767,791.20 = 274,877.58 : x
  2. Step 2: Convert to fraction form
    511,860.90/767,791.20 = 274,877.58/x
  3. Step 3: Cross multiply
    511,860.90x = 767,791.20 × 274,877.58
  4. Step 4: Simplify right side
    511,860.90x = 211,048,587,001.30
  5. Step 5: Solve for x
    x = 211,048,587,001.30/511,860.90
  6. Step 6: Final answer
    x = 412,316.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.